US2026067640A1PendingUtilityA1
Access point positionning
Est. expiryAug 31, 2044(~18.1 yrs left)· nominal 20-yr term from priority
G01S 5/0244G01S 5/0027H04W 84/12H04W 64/003G01S 11/06H04W 4/029H04W 4/023
53
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Claims
Abstract
Disclosed are a method, an access point (AP) and a computer program product for determining location of the AP. A location information of a communication device wirelessly coupled to the AP may be received, the location information including a first location uncertainty with a first confidence level. A distance between the AP and the communication device may be determined based at least on a measured signal strength of a signal received from the communication device. Location information of the AP may be determined based at least on the distance and the location information of the communication device. A second location uncertainty with a second confidence level may be determined based on the distance and the first location uncertainty as at least a portion of the location information of the AP.
Claims
exact text as granted — not AI-modified1 . A method for determining location of an access point (AP), the method comprising:
receiving a location information of a communication device wirelessly coupled to the AP, the location information including a horizontal location having a first horizontal uncertainty with a first confidence level and a vertical location having a first vertical uncertainty with the first confidence level; determining a distance between the AP and the communication device based at least on a measured signal strength of a signal received from the communication device, a receiving antenna gain of the AP and transmitting power of the communication device; and determining location information of the AP based at least on the distance and the location information of the communication device, wherein determining the location information of the AP comprising:
determining, based on the distance, the first horizontal uncertainty and the first vertical uncertainty, a second location uncertainty with a second confidence level as at least a portion of the location information of the AP.
2 . (canceled)
3 . The method of claim 1 , wherein the location information of the AP further includes the horizontal location and the vertical location.
4 . The method of claim 3 , wherein the second location uncertainty includes a second horizonal uncertainty with the second confidence level, the second horizonal uncertainty with the second confidence level being determined based on the first horizontal uncertainty and a first horizonal coefficient for converting from the first confidence level to the second confidence level, and the first horizonal coefficient is determined according to probability distribution of horizontal variance.
5 . The method of claim 4 , wherein the horizontal location includes longitude and latitude, and the probability distribution of horizontal variance is based on probability distribution of longitude variance and probability distribution of latitude variance.
6 . The method of claim 3 , wherein the second location uncertainty further includes a second vertical uncertainty with the second confidence level, the second vertical uncertainty with the second confidence level being determined based on the first vertical uncertainty and a second vertical coefficient for converting from the first confidence level to the second confidence level, and the second vertical coefficient is determined according to probability distribution of vertical variance.
7 . (canceled)
8 . The method of claim 1 , wherein the transmitting power of the communication device is determined based on a frequency band on which the communication device communicates with the AP.
9 . The method of claim 1 , wherein the distance between the AP and the communication device is determined according to the following equation:
d
=
10
P
STA
+
G
r
-
RSSI
AP
-
20
log
10
(
f
)
-
20
log
10
(
4
π
c
)
20
=
c
4
π
f
×
10
P
STA
+
G
r
-
RSSI
AP
20
wherein, d is the distance between the AP and the communication device, P STA is the transmitting power of the communication device, G r is the receiving antenna gain of the AP, RSSI AP is the signal strength measured at the AP, f is a frequency on which the communication device communicates with the AP, and c is the speed of light.
10 . The method of claim 1 , wherein the location information of the AP is reported to an automated frequency coordination (AFC) entity.
11 . An access point (AP), comprising:
at least one processor; a memory coupled to the at least one processor; and a set of computer program instructions stored in the memory, which, when executed by the at least one processor, causes the at least one processor to:
receive a location information of a communication device wirelessly coupled to the AP, the location information including a horizontal location having a first horizontal uncertainty with a first confidence level and a vertical location having a first vertical uncertainty with the first confidence level;
determine a distance between the AP and the communication device based at least on a measured signal strength of a signal received from the communication device, a receiving antenna gain of the AP and transmitting power of the communication device; and
determine location information of the AP based at least on the distance and the location information of the communication device,
wherein determining the location information of the AP comprising:
determining, based on the distance, the first horizontal uncertainty and the first vertical uncertainty, a second location uncertainty with a second confidence level as at least a portion of the location information of the AP.
12 . (canceled)
13 . The AP of claim 11 , wherein the location information of the AP further includes the horizontal location and the vertical location.
14 . The AP of claim 13 , wherein the second location uncertainty includes a second horizonal uncertainty with the second confidence level, the second horizonal uncertainty with the second confidence level being determined based on the first horizontal uncertainty and a first horizonal coefficient for converting from the first confidence level to the second confidence level, and the first horizonal coefficient is determined according to probability distribution of horizontal variance.
15 . The AP of claim 14 , wherein the horizontal location includes longitude and latitude, and the probability distribution of distance between two horizontal locations is based on probability distribution of longitude variance and probability distribution of latitude variance.
16 . The AP of claim 13 , wherein the second location uncertainty further includes a second vertical uncertainty with the second confidence level, the second vertical uncertainty with the second confidence level being determined based on the first vertical uncertainty and a second vertical coefficient for converting from the first confidence level to the second confidence level, and the second vertical coefficient is determined according to probability distribution of vertical variance.
17 . (canceled)
18 . The AP of claim 11 , wherein the transmitting power of the communication device is determined based on a frequency band on which the communication device communicates with the AP.
19 . The AP of claim 11 , wherein the distance between the AP and the communication device is determined according to the following equation:
d
=
10
P
STA
+
G
r
-
RSSI
AP
-
20
log
10
(
f
)
-
20
log
10
(
4
π
c
)
20
=
c
4
π
f
×
10
P
STA
+
G
r
-
RSSI
AP
20
wherein, d is the distance between the AP and the communication device, P STA is the transmitting power of the communication device, G r is the receiving antenna gain of the AP, RSSI AP is the signal strength measured at the AP, f is a frequency on which the communication device communicates with the AP, and c is the speed of light.
20 . A computer program product for determining location of an access point (AP), the computer program product comprising non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to:
receive a location information of a communication device wirelessly coupled to the AP, the location information including a horizontal location having a first horizontal uncertainty with a first confidence level and a vertical location having a first vertical uncertainty with the first confidence level; determine a distance between the AP and the communication device based at least on a measured signal strength of a signal received from the communication device, a receiving antenna gain of the AP and transmitting power of the communication device; and determine location information of the AP based at least on the distance and the location information of the communication device, wherein determining the location information of the AP comprising: determining, based on the distance, the first horizontal uncertainty and the first vertical uncertainty, a second location uncertainty with a second confidence level as at least a portion of the location information of the AP.Cited by (0)
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